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Finding the Fourth Proportional to 30,315.96, 41,830.47 and 16,886.88

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Solution

The fourth proportional to 30,315.96, 41,830.47 and 16,886.88 is: 23,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,315.96 : 41,830.47 = 16,886.88 : x
  2. Step 2: Convert to fraction form
    30,315.96/41,830.47 = 16,886.88/x
  3. Step 3: Cross multiply
    30,315.96x = 41,830.47 × 16,886.88
  4. Step 4: Simplify right side
    30,315.96x = 706,385,854.76
  5. Step 5: Solve for x
    x = 706,385,854.76/30,315.96
  6. Step 6: Final answer
    x = 23,300.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.